<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>说是神</title>
        <style>
            img{
                position:absolute;
                left:0px;
                top:0px;
                z-index: -1;
                cursor:alias;
            }
        </style>
    </head>
    <body>
        <h1>this is heading</h1>
        <img src="/imgs/250.png" width="100" height="140" alt="">
        <p>因为图像元素设置了 z-index 属性值为 -1, 所以它会显示在文字之后。</p>
    </body>
</html>